Molding-machine.



F. VAN GAUWENBERGH.

MOLDING MACHINE.

APPLICATION FILED SEPT. 15, 1913.

Patented Apr. 7, 1914 3 SHEETS-SHEET 1.

COLUMBIA PLANDORAPM 60.,WASHINO'YON. D C

P. VAN OAUWENBERGH.

MOLDING MACHINE. .APPLIOATION FILED SEPT. 15, 1913.

1,092,186. Patented Apr;7,1914.

3 SHEETSSHEET 2.

F. VAN GAUWENBBRGH.

MOLDING MACHINE.

APPLICATION 211.31) SEPT.15, 191s.

Patented Apr. 7, 1914.

3 SHEETS-SHEET 3.

WZIESSESI OM/(QW awa /Q COLUMBIA PLANOGRAPH CO.,WASHINGTDN, n. c.

pairs ears FRANK VAN CAUWENIBERGH, OF ROCKFORD, ILLINOIS.

MOLDING-MACHINE.

Specification of Letters Patent.

Patented Apr. 7, 191%.

Application filed September 15, 1913. Serial No. 789,934.

The object of this invention is to provide in a molding machine, a novel means for rapping a pattern platen and a means for operating same; the rapping of the platen adapted to be simultaneous with the raising of a filled flask from the platen.

The further object is to construct an improved fiask raising device which shall be reciprocable vertically and be constructed to operate easily and effectively.

In the accompanying drawings: Figure 1 is a plan view of my improved molding machine with a portion of the top and one;

platen broken away. Fig. 2 is a side elevational view of the molding machine, partially broken in section to show aninterior View. Fig. 3 is a vertical transverse section as taken on the line 38 of Fig. 2, showing the flask raising means moved to an elevated position. Fig. 4c is an enlarged plan View of the platen rapping means. Fig. 5 is a vertical sectional View through said rapping means, as taken on the line of sections 5-5 of Fig. 4. Fig. 6 is a vertical sectional view taken on the line 6-6 of Fig. 5. Fig. 7 is an end View of the operating end of the molding machine.

The standards 8 support a longitudinal frame comprising an open faced top 9 and lower braces 10; and located transverselyon the top frame and fixed thereto, are two platens 11 and 12 which span the open portions of said top 9. A flask 13 is adapted to be positioned on the top of a platen, and half-section patterns 14s are attached to each platen, within the inclosure of a flask, thus the two flasks when filled with sand, are removed from the platens and placed face together, they constitute the upper and lower members of a mold.

A shaft 15 is disposed below the top 9, longitudinally with the frame, and is journaled in bearings 16 secured to end braces 10. Hanger brackets .17 are secured to top 9, depending therefrom and forming ajournal support for the shaft 15. A vertical shaft 18 is carried by each of said brackets,

disposed intermediate the shaft 15 and top of the bracket, is journaled at its opposite ends in said members, and is adapted to carry and operate a. platen rapping device; and since the rapping device for each platen is of like construction and operates similarly, I will describe specifically but one device, that for rapping the platen 12.

A beveled pinion-gear 19 is keyed to shaft 18 and is in mesh with a beveled gear 20 fixed to shaft 15. Two oppositely positioned bevel gears 21 and 22 are mounted uponshaft 18, gear 21 pinned thereto and gear 22 loose thereon, and an intermediate bevel gear 23 meshes with both of said gears, being journaled upon a stub-shaft 2 1 carried by a cross-member of the bracket 17. To the upper hub end of gear 22 and mounted upon shaft 18 is fixedly secured a rapperarm carrier 25, and above said arm carrier is keyed to shaft 18 a second rapper-arm carrier 26; these arm carriers having oppositely disposed bifurcated extensions, the ends 27 of which are formed at an angle tangentially to the shaft 18, said extensions being quarterly disposed about shaft 18. Rapper-arms 28 have reduced ends 29 pivoted in said bifurcated extensions of the carriers, the shoulders formed by their reduced ends being formed at two angles, 30 and 31, whereby they may contact the angled ends 27 of the carrier extensions to limit the pivotal movement of the arms in opposite directions. Contactable bars 32 are fixed depending from the under side of platen 12, are positioned equal distances from the shaft 18 and in the path of the outer ends of the rapper-arms 28.

A hand-wheel 33 is fixed to one end of shaft 15, at the operating end of the molding machine, and by rotating this handwheel, shaft 18 will be rotated through gears 19 and 20, thus rotating rapper-arm carriers 25 and 26 in opposite directions, the rotation of the carrier 25 being reversed from that of 26 by the gear drive 21, 23, 22. The rapper-arms 28 when being rotated by their carriers unobstructedly, will be maintained through centrifugal force, in diametrically opposite alinement with their shoulders 30 abutting the angled ends 27 of the carriers,

thus limiting the pivotal movement of the arms in the direction of rotation; the arms being free to pivot oppositely when their outer ends strike obstructions 32, and after the obstructions are passed the arms will assume their normal position until another obstruction is encountered. Since these arms are spaced quarterly and every second arm is rotating in an opposite direction, a contact bar 32 will be rapped intermittently and each successive rap being from an opposite direction.

At each end of the frame is carried a vertical rod 34: forming a slideway upon which rectangular ends 35 of a flask moving'frame are slidably mounted, these ends being connected at their upper portions by longitudinally disposed angle-bars 36. A longitudinally disposed shaft 37 journaled in end standards 8 have two knee-link connections 38, each with one link fixed to said shaft and the other link pivoted to a frame end 35; and a hand-lever 39 at the operating end of the machine is fixed to shaft 37, has a thumb catch connection with a notched segment 40, and vertical movement of this hand-lever reciprocates the said frame vertically. A coiled spring 41 for each frame end 35, has one end attached to rod 34 and its other end attached to a frame end 35, exerting a tension upon said frame ends tending to raise same.

The means coiiperating with the reciprocable frame for raising the flasks are in the form of four vertical rods 42, one beneath each corner of the flask, and which rest upon the angle-bars 36 and pass slida'bly through apertures in the top 9 and platen 12, the rods having additional guide brackets 43.

Assuming the flask raising means to be in a lowered position, (the hand lever 39 elevated) a flask is placed upon each platen,

over rods 4&2, filled with sand and rammed in a suitable manner. The molds are now ready to be parted from their patterns and raised, which operation necessitates the vibrating of the patterns and platens in order to loosen them from the sand in the flasks, and if the patterns and flasks are not'properly vibrated the sand will not part from said members, this resulting in defective molds. Preparatory to raising the flasks the hand-wheel 33 is rotated, thus rapping the contact-bars 32 intermittently in opposite directions in a manner as heretofore described, and since these contact-bars 32 are spaced radially about a center, the patterns and platens will receive a continuous vibration, the individual raps following one another instantaneously and are of such a nature, because of their striking directions, that they impart sharp counteracted raps which loosen very perfectly and effectively the platens and patterns from the sand. It will be noticed that since the platen having the pattern fixedly attached thereto is fixedly secured at its opposite ends, that such vibrating does not enlarge the sand pattern by excessive movement of the pattern, but that through these means of vibration the degree and nature of vibration rendered is substantially perfect for its purpose. When the platen has been thus vib rated for a short intervalsuflicient to loosen the sand-the operator will move the hand-lever 39 to a lowered position, simultaneously with the rotating of the hand wheel 33 with his other hand, thereby raising the flasks to an elevated position, and by engaging said hand-lever with its segment the flasks are maintained elevated. They may now be removed from the machine and placed face together, ready for pouring.

This means for mechanically vibrating a platen and pattern which are supported fixedly but in a manner to allow perceptible vibration is a very material factor in suc cessful mold preparation by molding machines where the highest efliciency in labor and mold perfection is a desideratum; and in my above disclosed structure novel and improved means warrant these desirabilities.

I claim as my invention: I

1. In a molding machine, the combination with a platen and a pattern fixedly connected thereto, of a member projecting from the platen, and means adapted to be continuously rotated to alternately rap said member from opposite sides.

2. In a molding machine, the combination with a member associated with a pattern platen, of means for vibrating said member by rapping, said means including two rotatable members rotated in opposite directions and to vrap said member by oppositely directed raps.

3. In a molding machine, the combination with a pattern platen, of rotatable means having spaced arms extending therefrom in the plane of rotation of said means, a contact member extending from said platen in the path of said arms, and'means for rotating said arm carrying means to effect rotation of said arms in opposite directions.

l. In a molding machine, the combination with a pattern platen, of means for rapping said platen, comprising, a rotatable member, arms pivoted to said member, meansfor rotating said member, and a contact member associated with said platen and disposed in the path of rotation of said arms, to be rapped thereby.

5. In a molding machine, the combination with a pattern platen, of means for rapping said platen, comprising, a rotatable member, arms pivoted to said member and being positioned in contactable relation with said platen, and means for rotating said member whereby the arms will rap the platen intermittently.

6. In a molding machine, the combination with a pattern platen, of means for vibrating a portion of said platen, comprising, two rotatable members, each carrying a rapadapted to be ping member, a member associated with said platen and being positioned in the path of rotation of said rapping members, and means for rotating said rotatable members in opposite directions, whereby each rapping member will rap said platen associated member from an opposite direction.

7. In a molding machine, the combination with a pattern platen, of means for vibrating a portion of said platen, comprising, two rotatable members, each carrying a rapping member, a member associated with said platen and being positioned in the path of rotation of said rapping members, and means for rotating said rotatable members in opposite directions.

8. In a molding machine, the combination with a pattern platen, of two rotatable members, an arm pivoted radially extending to each of said members, a contactable member associated with the platen and being disposed in the path of rotation of said arms, and means for rotating said rotatable members whereby said pivoted arms will strike said platen associated member from opposite directions.

9. In a molding machine, the combination with a pattern platen, of a rotatable member, an arm pivoted at one end to the peripheral side of said rotatable member, a stop for limiting the pivotal movement of said arm in one direct-ion, the free end of said arm being disposed in contactable relation with a portion of said platen, and means for rotating said rotatable member whereby the free end of said arm will be caused to strike said platen.

10. In a molding machine, the combina tion with a pattern platen, of a rotatable member, two arms pivoted at diametrically opposite sides to said member, stops for limiting the pivotal movement of the arms in the direction of their rotation, a member associated with said platen and being disposed in the path of the free end of said arms, and means for rotating said rotatable member.

11. In a molding machine, the combination with a pattern platen, of two rotatable members, two arms for each member pivoted at diametrically opposite sides of a member, stops for limiting pivotal movement of said arms, a plurality of members associated with the platen and being disposed in the path of rotation of said arms, and means for rotating said rotatable members in opposite direct-ions.

12. In a molding machine, the combina tion with a pattern platen, a drive-shaft, two bevel-gears mounted upon said drive-shaft, one loose and one tight thereon, a bevel-gear meshing with both said bevel-gears, platen rapping means fixed to said shaft, platen rapping means fixed to said loosely mounted bevel-gear, and means for rotating said drive-shaft.

18. In a molding machine, the combination with a pattern platen, of a drive-shaft, a sleeve member mounted loosely thereon, two platen rapping devices attached separately one to said drive-shaft and one to said sleeve member, and means for driving the shaft and sleeve member in opposite directions.

14. In a molding machine, the combination with a pattern platen, of a drive-shaft, a sleeve member mounted loosely thereon, two platen rapping devices attached separately one to said drive-shaft and one to said sleeve member, means for driving the shaft in one direction, and a driving connection between the shaft and sleeve member for driving the latter in a direction opposite to that of the shaft.

15. In a molding machine, the combination with a supporting frame, of a vertical rod fixed to each end of said frame, a flask raising frame mounted slidably upon said rods, a horizontal rod extending substantially to each end of said flask raising frame, a link connection between each end of said flask raising frame and said horizontal rod, means for rocking said rod, and flask engaging means associated with said flask raising frame.

16. In a molding machine, the combination with a supporting frame having a flask receiving top, of a vertically movable frame located below said top and being associated therewith to operate upon by vertical movement a flask located 011 said top, spring means connecting the two frames for exertingalifting force on the movable frame, and operable means for effecting raising and lowering of said movable frame.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

FRANK VAN CAUWENBERGH.

Witnesses HARRY SHonns, RABBERT ALBRETS.

Copies of this patent may be obtained for five cents each, by addressing the (lommissioner of Patents, Washington, D. G. 

